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1/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
4 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License version 2.
8 */
9
10#ifndef __INODE_DOT_H__
11#define __INODE_DOT_H__
12
13#include <linux/fs.h>
14#include <linux/buffer_head.h>
15#include <linux/mm.h>
16#include "util.h"
17
18extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask);
19extern int gfs2_internal_read(struct gfs2_inode *ip,
20 char *buf, loff_t *pos, unsigned size);
21extern void gfs2_set_aops(struct inode *inode);
22
23static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
24{
25 return !ip->i_height;
26}
27
28static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
29{
30 return ip->i_diskflags & GFS2_DIF_JDATA;
31}
32
33static inline int gfs2_is_writeback(const struct gfs2_inode *ip)
34{
35 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
36 return (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK) && !gfs2_is_jdata(ip);
37}
38
39static inline int gfs2_is_ordered(const struct gfs2_inode *ip)
40{
41 const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
42 return (sdp->sd_args.ar_data == GFS2_DATA_ORDERED) && !gfs2_is_jdata(ip);
43}
44
45static inline int gfs2_is_dir(const struct gfs2_inode *ip)
46{
47 return S_ISDIR(ip->i_inode.i_mode);
48}
49
50static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
51{
52 inode->i_blocks = blocks <<
53 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
54}
55
56static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
57{
58 return inode->i_blocks >>
59 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
60}
61
62static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
63{
64 gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks > -change));
65 change *= (GFS2_SB(inode)->sd_sb.sb_bsize/GFS2_BASIC_BLOCK);
66 inode->i_blocks += change;
67}
68
69static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
70 u64 no_formal_ino)
71{
72 return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
73}
74
75static inline void gfs2_inum_out(const struct gfs2_inode *ip,
76 struct gfs2_dirent *dent)
77{
78 dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
79 dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
80}
81
82static inline int gfs2_check_internal_file_size(struct inode *inode,
83 u64 minsize, u64 maxsize)
84{
85 u64 size = i_size_read(inode);
86 if (size < minsize || size > maxsize)
87 goto err;
88 if (size & ((1 << inode->i_blkbits) - 1))
89 goto err;
90 return 0;
91err:
92 gfs2_consist_inode(GFS2_I(inode));
93 return -EIO;
94}
95
96extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,
97 u64 no_addr, u64 no_formal_ino);
98extern struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
99 u64 *no_formal_ino,
100 unsigned int blktype);
101extern struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr);
102
103extern int gfs2_inode_refresh(struct gfs2_inode *ip);
104
105extern struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
106 int is_root);
107extern int gfs2_permission(struct inode *inode, int mask);
108extern int gfs2_setattr_simple(struct inode *inode, struct iattr *attr);
109extern struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
110extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
111extern int gfs2_open_common(struct inode *inode, struct file *file);
112
113extern const struct inode_operations gfs2_file_iops;
114extern const struct inode_operations gfs2_dir_iops;
115extern const struct inode_operations gfs2_symlink_iops;
116extern const struct file_operations gfs2_file_fops_nolock;
117extern const struct file_operations gfs2_dir_fops_nolock;
118
119extern void gfs2_set_inode_flags(struct inode *inode);
120
121#ifdef CONFIG_GFS2_FS_LOCKING_DLM
122extern const struct file_operations gfs2_file_fops;
123extern const struct file_operations gfs2_dir_fops;
124
125static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
126{
127 return sdp->sd_args.ar_localflocks;
128}
129#else /* Single node only */
130#define gfs2_file_fops gfs2_file_fops_nolock
131#define gfs2_dir_fops gfs2_dir_fops_nolock
132
133static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
134{
135 return 1;
136}
137#endif /* CONFIG_GFS2_FS_LOCKING_DLM */
138
139#endif /* __INODE_DOT_H__ */
140
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 */
6
7#ifndef __INODE_DOT_H__
8#define __INODE_DOT_H__
9
10#include <linux/fs.h>
11#include <linux/buffer_head.h>
12#include <linux/mm.h>
13#include "util.h"
14
15extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask);
16extern int gfs2_internal_read(struct gfs2_inode *ip,
17 char *buf, loff_t *pos, unsigned size);
18extern void gfs2_set_aops(struct inode *inode);
19
20static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
21{
22 return !ip->i_height;
23}
24
25static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
26{
27 return ip->i_diskflags & GFS2_DIF_JDATA;
28}
29
30static inline bool gfs2_is_ordered(const struct gfs2_sbd *sdp)
31{
32 return sdp->sd_args.ar_data == GFS2_DATA_ORDERED;
33}
34
35static inline bool gfs2_is_writeback(const struct gfs2_sbd *sdp)
36{
37 return sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK;
38}
39
40static inline int gfs2_is_dir(const struct gfs2_inode *ip)
41{
42 return S_ISDIR(ip->i_inode.i_mode);
43}
44
45static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
46{
47 inode->i_blocks = blocks <<
48 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
49}
50
51static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
52{
53 return inode->i_blocks >>
54 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
55}
56
57static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
58{
59 change <<= inode->i_blkbits - GFS2_BASIC_BLOCK_SHIFT;
60 gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks >= -change));
61 inode->i_blocks += change;
62}
63
64static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
65 u64 no_formal_ino)
66{
67 return ip->i_no_addr == no_addr && ip->i_no_formal_ino == no_formal_ino;
68}
69
70static inline void gfs2_inum_out(const struct gfs2_inode *ip,
71 struct gfs2_dirent *dent)
72{
73 dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
74 dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
75}
76
77static inline int gfs2_check_internal_file_size(struct inode *inode,
78 u64 minsize, u64 maxsize)
79{
80 u64 size = i_size_read(inode);
81 if (size < minsize || size > maxsize)
82 goto err;
83 if (size & (BIT(inode->i_blkbits) - 1))
84 goto err;
85 return 0;
86err:
87 gfs2_consist_inode(GFS2_I(inode));
88 return -EIO;
89}
90
91extern struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type,
92 u64 no_addr, u64 no_formal_ino,
93 unsigned int blktype);
94extern struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
95 u64 no_formal_ino,
96 unsigned int blktype);
97
98extern int gfs2_inode_refresh(struct gfs2_inode *ip);
99
100extern struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
101 int is_root);
102extern int gfs2_permission(struct inode *inode, int mask);
103extern int gfs2_setattr_simple(struct inode *inode, struct iattr *attr);
104extern struct inode *gfs2_lookup_simple(struct inode *dip, const char *name);
105extern void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf);
106extern int gfs2_open_common(struct inode *inode, struct file *file);
107extern loff_t gfs2_seek_data(struct file *file, loff_t offset);
108extern loff_t gfs2_seek_hole(struct file *file, loff_t offset);
109
110extern const struct inode_operations gfs2_file_iops;
111extern const struct inode_operations gfs2_dir_iops;
112extern const struct inode_operations gfs2_symlink_iops;
113extern const struct file_operations gfs2_file_fops_nolock;
114extern const struct file_operations gfs2_dir_fops_nolock;
115
116extern void gfs2_set_inode_flags(struct inode *inode);
117
118#ifdef CONFIG_GFS2_FS_LOCKING_DLM
119extern const struct file_operations gfs2_file_fops;
120extern const struct file_operations gfs2_dir_fops;
121
122static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
123{
124 return sdp->sd_args.ar_localflocks;
125}
126#else /* Single node only */
127#define gfs2_file_fops gfs2_file_fops_nolock
128#define gfs2_dir_fops gfs2_dir_fops_nolock
129
130static inline int gfs2_localflocks(const struct gfs2_sbd *sdp)
131{
132 return 1;
133}
134#endif /* CONFIG_GFS2_FS_LOCKING_DLM */
135
136#endif /* __INODE_DOT_H__ */
137